1660161474 has 32 divisors (see below), whose sum is σ = 3739794240. Its totient is φ = 545805216.

The previous prime is 1660161431. The next prime is 1660161487. The reversal of 1660161474 is 4741610661.

It is a happy number.

1660161474 is a `hidden beast` number, since 1 + 6 + 601 + 6 + 1 + 47 + 4 = 666.

It is a super-2 number, since 2×1660161474² = 5512272239507705352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206632 + ... + 214515.

It is an arithmetic number, because the mean of its divisors is an integer number (116868570).

Almost surely, 2^1660161474 is an apocalyptic number.

1660161474 is an abundant number, since it is smaller than the sum of its proper divisors (2079632766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1660161474 is a wasteful number, since it uses less digits than its factorization.

1660161474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421231 (or 421225 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1660161474 is about 40745.0791384678. The cubic root of 1660161474 is about 1184.0865384649.

The spelling of 1660161474 in words is "one billion, six hundred sixty million, one hundred sixty-one thousand, four hundred seventy-four".